This paper is a contribution to the literature on the role of the sentiment indices in heterogeneous asset pricing models. We propose a new sentiment index in a financial market where we assume that transactions take place between two groups of fundamentalists that differentiate on the perception of the fundamental value. We assume that the fraction of fundamentalists in the two groups depends on the sentiment index. After studying the analytical properties of the deterministic discrete dynamical system we compare the new index with a previous index introduced in financial literature. For this purpose, by adding stochastic components to the fundamentalist' demands, we measure the performance of our model under different sentiment indices and we test its explanatory power to reproduce the stylized facts of financial data relying on the S&P500 index.

Campisi, G. e S., Muzzioli. "Fundamentalists heterogeneity and the role of the sentiment indicator" Working paper, DEMB WORKING PAPER SERIES, Dipartimento di Economia Marco Biagi - Università di Modena e Reggio Emilia, 2020. https://doi.org/10.25431/11380_1207428

Fundamentalists heterogeneity and the role of the sentiment indicator

Campisi, G.
;
Muzzioli, S.
2020

Abstract

This paper is a contribution to the literature on the role of the sentiment indices in heterogeneous asset pricing models. We propose a new sentiment index in a financial market where we assume that transactions take place between two groups of fundamentalists that differentiate on the perception of the fundamental value. We assume that the fraction of fundamentalists in the two groups depends on the sentiment index. After studying the analytical properties of the deterministic discrete dynamical system we compare the new index with a previous index introduced in financial literature. For this purpose, by adding stochastic components to the fundamentalist' demands, we measure the performance of our model under different sentiment indices and we test its explanatory power to reproduce the stylized facts of financial data relying on the S&P500 index.
2020
Marzo
Campisi, G.; Muzzioli, S.
Campisi, G. e S., Muzzioli. "Fundamentalists heterogeneity and the role of the sentiment indicator" Working paper, DEMB WORKING PAPER SERIES, Dipartimento di Economia Marco Biagi - Università di Modena e Reggio Emilia, 2020. https://doi.org/10.25431/11380_1207428
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1207428
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